In June 2016, Oppo became the biggest smartphone manufacturer in China, selling its phones at more than 200,000 retail outlets. Oppo was the top smartphone brand in China in 2019 and was ranked No. 5, in market share, worldwide.
In 2014, Oppo released a number of high-end headphones and amplifiers. The flagship PM-1 and PM-2 headphones along with the HA-1 desktop amplifier have been heavily promoted in the audio community. One blogger declares the PM-1 is “near to perfect”.
Released in 2015, the HA-2, was a portable version of the HA-1 amp/DAC, which featured a battery pack option and a stitched leather casing. The phone played music in real-time to the HA-2 (via the included Android micro USB cable or iOS lightning cable, or USB cable if from PC). It also can be charged using an included “rapid charger” charging kit. The battery pack feature can only be used simultaneously while the HA-2 is used to play music if the playing (source) device is an Apple iOS device. In October 2016, an updated version was released with a new DAC chip and now named HA-2SE. Otherwise, it was the same as the HA-2.